what is valency? how are elements forming compound?

Asked by sital001 | 26th Mar, 2015, 09:48: PM

Expert Answer:

Valency:
The combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.
 

Elements form compound on the basis of difference in their electronegativites. If the difference is very large, then the ionic compounds are formed in which highly electronegative element donates electron and the electropositive element accepts electron.

If the difference is small, then covalent compounds are formed by sharing of electrons.

Answered by Prachi Sawant | 27th Mar, 2015, 10:53: AM

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